Care
Living with a mechanical watch.
Plain advice. It is not a warranty, and it is not a substitute for a watchmaker.
Wind and wear
An automatic watch is wound by wearing it. If it has stopped, thirty or forty gentle turns of the crown, with the crown pushed in unless the listing says it is a screw-down crown that you have unscrewed, is enough to start it. Do not force a crown that will not move. Screw-down crowns should be screwed home after setting the time, or water will find the gap.
Water
Only treat a watch as ready for water when its listing says so, and even then avoid hot showers, saunas, and the crown area while it is wet. Gaskets age. A vintage piece with an acrylic crystal is not a swimming watch, whatever the model was when it was new.
Magnetism, shocks, and light
Speakers, phone cases with magnets, and some bags can stop a mechanical watch. If it suddenly runs very fast, a watchmaker can usually demagnetise it. Take the watch off for golf, drums, and anything that jars the wrist. Strong sunlight fades some vintage dials. A box, away from a window, is the right place overnight.
Service
A mechanical movement likes a service every five to eight years, sooner if it stops, grates, or lets moisture under the crystal. Do not open the case back yourself. If a piece from AH Limited is not running when it arrives, and you have not worn it in water or had it opened, write within 14 days. The returns notice explains what happens next.